On July 14, 2017, the administrator of a popular English-language pro-ISIS Telegram channel offered some tips to fellow ISIS supporters and activists on how to stay safe online. The administrator revealed that he uses the app Secure Wipe, which is available on Google Play, to delete leftover mirror images on his device. The administrator also shared that he deletes his Telegram folder on a daily basis, and that he never travels with the phone on which he has Telegram installed.
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